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Journal of Materials Science & Technology 2020年第12期47卷 103-112页

作者： Tao chen Heping li Jing li Sanyuan Hu Pin Ye Youwei Yan State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Ultrafine silver fiber is an alternative to commercial indium tin oxide(ITO) as a new-generation flexible transparent conductor that can be used in flexible ***,its primary limitation is the unrepeatable optoelectronic properties due to the disordered distribution of silver *** this work,we report the in-situ direct writing of the silver microfiber pattern with high conductivity and transparency to attain a flexible transparent *** silver network is composed of silver microfibers,which can be artificially designed and regularly patterned under the precise control of the fiber position and shape;this is crucial for regulating its optoelectronic ***,a high-performance conductor is achieved in the silver network with high *** novel conductor has a sheet resistance of 2 Ω sq-1at 90% transparency,which corre sponds to a high Figure of merit σdc/σopt=*** in-situ direct writing technique developed here is distinct from other fabrication methods because it requires no transfer steps,templates or ***,this silver network is integrated into a light-printable rewritable device,and can be used as a wearable heater;this heater when driven by a 1.5 V battery attains a temperature of up to 55.6℃.Therefore,in-situ direct writing is expected to offer a new platform for facile,scalable,and ultralow-cost production of high-performance metal networks for flexible transparent conductors.

关键词： Silver Transparent conductor Direct writing Patterning Transparent heater

MXenes/CNTs-based hybrids:Fabrications,mechanisms,and modification strategies for energy and environmental applications

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Nano Research 2024年第5期17卷 3429-3454页

作者： Jizhou Jiang Fangyi li Lei Ding chengxun Zhang Arramel Xin li School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China Nano Center Indonesia Jl.PUSPIPTEK Tangerang SelatanBanten 15314Indonesia Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

Emerging two-dimensional(2D)layered metal carbide and nitride materials,commonly termed MXenes,are increasingly recognized for their applications across diverse fields such as energy,environment,and *** the past few years,MXenes/carbon nanotubes(CNTs)-based hybrids have attracted extensive attention as an important catalyst in energy and environmental fields,due to their superior multifunctions and mechanical *** review aims to address the fabrication strategies,the identification of the enhancement mechanisms,and recent progress regarding the design and modification of MXenes/CNTs-based hybrids.A myriad of fabrication techniques have been systematically summarized,including mechanical mixing,spray drying,three-dimensional(3D)printing,self-assembly/in-situ growth,freeze drying,templating,hydrothermal methods,chemical vapor deposition(CVD),and ***,the identification of the enhancement mechanisms was thoroughly discussed from the two dimensions of theoretical simulations and in-situ ***,the recent advancements in profound applications of MXenes/CNTs-based hybrids have also been carefully revealed,including energy storage devices,sensors,water purification systems,and microwave *** also underscore anticipated challenges related to their fabrication,structure,underlying mechanisms,modification approaches,and emergent ***,this review offers insights into prospective directions and the future trajectory for these promising *** is expected that this review can inspire new ideas or provide new research methods for future studies.

关键词： MXenes/carbon nanotubes(CNTs)-based hybrids fabrication applications modification strategies

Trends in Injury-related Incidence and Mortality Among Inpatients in Guangdong Province in 1997-2001

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Biomedical and Environmental Sciences 2004年第3期17卷 333-340页

作者： li-PINGli SHENGWANG InjuryPreventionResearchCenter ShantouUniversityMedicalCollegeShantou515031GuangdongChina／／22XinlingRoadInjuryPreventionResearchCentreMedicalCollegeS.han.touUniversityShantou515031GuangdongChina SchoolofPublichealth BeijingUniversityBeijing100083China

Objective Currently, china is in short of thorough and systemic data concerning the patterns and incidence of injuries and related deaths. Guangdong Province as one of the economically advanced areas in china is faced with a relatively serious injury problem, and investigation of this problem in this Province will provide valuable information for other provinces and areas in this Country, as well as scientific basis for policy making for injury prevention and control. Methods Analyses are based on the computerized hospital discharge data collected from 322 hospitals in Guangdong Province between 1997 and 2001. Diagnoses are coded according to the International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM). Results The total hospitalization rate related with injuries increased year by year from 1997 to 2001. The ratio of case-fatality has a decline trend for all injury inpatients, who were mainly caused by motor vehicle accidents, unintentional falls, puncture and cut by machine and others. The constituent ratio of death among patients caused by motor vehicle accidents accounted for 56.13% among the total deaths, which ranked as the first place. The direct medical cost also had an increased trend. Conclusions Data on injuries requiring hospitalization can be used to design and target more effective injury prevention programs. Injury prevention would decrease human sufferings, disability, and associated economic losses.

关键词： Injury Hospitalization Motor vehicle accident Medical care costs

The new RS CVn binary V1034 Her revisited and the orbital period—activity relation of short-period RS CVn binaries using photometric distortion amplitude

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Research in Astronomy and Astrophysics 2012年第4期12卷 433-442页

作者： li-Yun Zhang College of Science/Department of Physics&NAOC-GZU-Sponsored Center for Astronomy Research Guizhou UniversityGuiyang 550025China

This paper presents new CCD BV RI light curves of the newly discovered RS CVn eclipsing binary V1034 Her in 2009 and 2010, the shapes of which are different from previously published results. They show an asymmetric outside eclipse, and we try to use a spot model to explain the phenomenon. Using the Wilson-Devinney program with a one-spot or two-spot model, photometric solutions of the system and starspot parameters were derived. Comparing the two results shows that the case of two spots is more successful in reproducing light-curve distortions. Looking at all the spot longitudes, the trend is towards active longitude belts and each active longitude belt may switch. Comparing the light curves from 2009 and 2010, we can see that the light curve changes over the long time scale of a year, especially in phase 0.25. In addition, we also collected the values of the maximum amplitudes of photometric distortion of the short-period RS CVn binary. We found for the first time that there is a trend of increasing activity with decreasing orbital period. Finally, fitting all available light minimum times including our newly obtained ones with a polynomial function confirmed that the orbital period of V1034 Her increased.

关键词： stars: binaries: late-type — stars: binaries: eclipsing — stars: individuals (V1034 Her) — stars: spots

Determining Topographic Shielding from Digital Elevation Models for Cosmogenic Nuclide Analysis:a GIS Approach and Field Validation

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Journal of Mountain Science 2013年第3期10卷 355-362页

作者： li Ying-kui Department of Geography University of Tennessee

Topographic shielding of cosmic radiation flux is a key parameter in using cosmogenic nuclides to determine surface exposure ages or erosion rates. Traditionally, this parameter is measured in the field and uncertainty and/or inconsistency may exist among different investigators. This paper provides an ArcGIS python code to determine topographic shielding factors using digital elevation models （DEMs）. This code can be imported into ArcGIS as a geoprocessing tool with a user-friendly graphical interface. The DEM-derived parameters using this method were validated with field measurements in central Tian Shan. Results indicate that DEM-derived shielding factors are consistent with field-measured values. It provides a valuable tool to save fieldwork efforts and has the potential to provide consistent results for different regions in the world to facilitate the comparison of cosmogenie nuclide results.

关键词： Cosmogenic nuclides Topographicshielding ArcGIS Python Digital elevation models(DEMs)

Understanding and optimizing the gasification of biomass waste with machine learning

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Green chemical Engineering 2023年第1期4卷 123-133,F0004页

作者： Jie li Lanyu li Yen Wah Tong Xiaonan Wang Department of chemical and Biomolecular Engineering National University of SingaporeSingapore117585Singapore Department of chemical Engineering Tsinghua UniversityBeijing100084China

Gasification is a sustainable approach for biomass waste treatment with simultaneous combustible H2-syngas ***,this thermochemical process was quite complicated with multi-phase products *** product distribution and composition also highly depend on the feedstock information and gasification *** present,it is still challenging to fully understand and optimize this *** this context,four datadriven machine learning(ML)methods were applied to model the biomass waste gasification process for product prediction and process interpretation and *** results indicated that the Gradient Boosting Regression(GBR)model showed good performance for predicting three-phase products and syngas compositions with test R^(2)of 0.82–*** GBR model-based interpretation suggested that both feed and gasification condition(including the contents of feedstock ash,carbon,nitrogen,oxygen,and gasification temperature)were important factors influencing the distribution of char,tar,and ***,it was found that a feedstock with higher carbon(>48%),lower nitrogen(chieve a higher yield of H_(2)-rich *** was shown that the optimal conditions suggested by the model could achieve an output containing 60%–62%syngas and achieve an H_(2)yield of 44.34 mol/*** valuable insights provided from the model-based interpretation could aid the understanding and optimization of biomass gasification to guide the production of H_(2)-rich syngas.

关键词： Biomass to energy Gasification Data-driven Hydrogen Tar reduction

On Weil's explicit formula

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Science china Mathematics 2015年第5期58卷 915-982页

作者： li Xian-Jin Department of Mathematics Brigham Young University

A program of proving the Riemann hypothesis by using the Fourier analysis on global fields is given by Connes(1999). The difficulty for realizing the program lies in proving the validity of Connes' global trace formula on an L2-space. In this paper, a new global trace formula is obtained on a Fr′echet space which gives the Weil distribution △(h).

关键词： global trace formula nuclear locally convex space Riemann hypothesis

Salubrinal protects against tunicamycin and hypoxia induced cardiomyocyte apoptosis via the PERK-eIF2a signaling pathway

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Journal of Geriatric Cardiology 2012年第3期9卷 258-268页

作者： chun-Lei liu Xin li Guo-liang Hu Rui-Jun li Yun-Yun He Wu Zhong Song li Kun-Lun He li-li Wang Department of Cardiology Chinese PLA General Hospital28 Fuxing RoadBeijing 100853China Medical School of Nankai University 74 Weijin RoadTianjin 300074China Pharmacy Institute of Military Medical Sciences 27 Taiping RoadBeijing 100850China

Objectives This study examined the protective effect of salubrinal and the mechanism underlying this protection against tunicamycin （TM）- and hypoxia-induced apoptosis in rat cardiomyocytes. Methods Neonatal rat cardiomyocytes were cultured from the ventricles of l-day-old Wistar rats. Cells were exposed to different concentrations of salubrinal （10, 20, and 40 gmol/L） for 30 min followed by TM treatment or hypoxia for 36 h. Apoptosis was measured by a multiparameter HCS （high content screening） apoptosis assay, TUNEL assay and flow cytometry. The phosphorylation of eukaryotic translation initiation factor 2 subunit alpha （eIF2c0 and the expression of cleaved caspase-12 were determined by Western blotting. C/EBP homologous protein （chOP） was detected by immunocytochemistry. Results HCS, TUNEL assays and flow cytometry showed that salubrinal protected cardiomyocytes against apoptosis induced by TM or hypoxia. Western blotting showed that salubrinal protected cardiomyocytes against apoptosis by inducing eIF2ct phosphorylation and down-regulating the expression of the endoplasmic reticulum stress-mediated apoptotic proteins, chOP and cleaved caspase-12. Conclusions Our study suggests that salubrinal protects rat cardiomyocytes against TM- or hypoxia-associated apoptosis via a mechanism involving the inhibition of ER stress-mediated apoptosis.

关键词： Endoplasmic reticulum stress Rat cardiomyocytes Apoptosis Salubrinal Cell protection

Insights to the formation of secondary inorganic PM_(2.5):Current knowledge and future needs

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International Journal of Agricultural and Biological Engineering 2015年第2期8卷 1-13页

作者： lingjuan Wang-li Department of Biological and Agricultural Engineering North Carolina State UniversityRaleighNC 27695USA

As a criteria pollutant,fine particulate matter(fine PM,***_(2.5))adversely affects public health and environment,contributes to visibility degradation and regional *** fine PM includes primary and secondary PM_(2.5).While the primary PM_(2.5) is from direct emissions,the secondary PM_(2.5) is formed in the atmosphere through photochemical reaction,condensation and other atmospheric *** it is well known that ammonia(NH3)may react with acidic gas species to form secondary inorganic PM_(2.5)(iPM_(2.5))as ammonium salts,limited research has been done to quantify the impacts of NH_(3) emissions of animal feeding operations(AFOs)on the dynamics of such chemical reactions and gas-particle phases *** paper is to provide comprehensive review of existing research on AFO PM chemical speciation and on the formation of secondary iPM_(2.5) as impacted by AFO air *** gaps and future studies in characterizing AFO PM and assessing impacts of AFO air emissions on atmospheric PM are discussed.

关键词： environmental pollution particulate matter inorganic PM_(2.5) animal feeding operations ammonia formation of secondary PM_(2.5)

Stick-slip nonuniform rotation distortion correction in distal scanning optical coherence tomography catheters

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Journal of Innovative Optical Health Sciences 2020年第6期3卷 94-101页

作者： Jessica Mavadia-Shukla Jianlin Zhang Kaiyan li Xingde li Department of Biomedical Engineering Johns Hopkins University Baltimore MD 21205USA

We present a robust and fiducial-marker-free algorithm that can identify and correct stick-slip distortion caused by nonuniform rotation(or beam scanning)in distally scanned catheters for endoscopic optical coherence tomography(OCT)*** algorithm employs spatial fre-quency analysis to select and remove *** demonstrate the feasibility of this algorithm on images acquired from ex vivo rat colon with a distally scanned DC motor-based *** proposed algorithm can be applied to general endoscopic OCT images for correcting non-uniform rotation distortion.

关键词： Optical coherence tomography nonuniform rotation distortion correction endoscope distal-scanning